1 Chronicles 15:17

15:17 So the Levites appointed Heman son of Joel; one of his relatives, Asaph son of Berechiah; one of the descendants of Merari, Ethan son of Kushaiah;

1 Chronicles 16:4

16:4 He appointed some of the Levites to serve before the ark of the Lord, to offer prayers, songs of thanks, and hymns to the Lord God of Israel.